Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

每一天都是改变生活的新机会。

"The best way to predict the future is to invent it."

The best players have the shortest memories.

The mind is a biological achievement of the highest order.

The spirit of moderation should also be the spirit of the lawgiver.

农业的未来在于智慧农业。